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No. 509,251. Patented NW2 1893..

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UNrrnD STATES PATENT OFFICE.

DAVID J. SHELDRIOK, OF COLUMBUS, OHIO, ASSIGNOR TO JOSEPH A. JEFFREY, OFSAME PLACE.

CONVEYER SPECIFICATION forming part of Letters Patent No. 509,251, datedNovember 21, 1893.

Application filed March 22,1893. Serial No. 467,135. (No model);

To aZZ whom it may concern/@- 7 Be it known that 1, DAVID J. SHELDRICK,a citizen of the United States, residing at Oolu mbus, in the county ofFranklin and State of Ohio, have invented certain new and usefulImprovements in Conveyors, of which the following is a specification,reference being had therein to the accompanying drawings.

Figupe 1 is a longitudinal section of a device embodying myimprovements.Fig. 2 is a side elevation. Fig. 3 is a face view of the carrier disk.Fig. 4 is a top View. Fig. 5 is a side view, and Fig. 6 a face view ofan attachmenthavinga scraperflight formed with, or secured to, it.

In the drawingsA indicates a wire rope or cable which may be ofdimensions suitable to accomplish the purposes intended. Heretoforecarriers and conveyors have been constructed of such cable or rope,together with attachments of such nature that the device was eithercapable of transmitting power from one point to another, the attachmentsbeing adapted to engage with driving and driven wheels or of carryingaflight, scraper, or conveyer bar adapted to engage with materials ofvarious sorts, and to propel them from place to place. But serioustrouble has been experienced in the using of the mechanisms of this sortwith which I am acquainted, mainly owing to the fact that, from onecause or another, the attachment has become loose upon the cable. Insome cases this has been due to the fact that the two metallic castingsor halves of the hub part which fit around the cable have beenconstructed only so as to be connected by the bolts which pass from oneside to the other; and the strains and movements of the parts of theattachment when at work have resulted in a loosening of the bolts andnuts.

One of the objects of the present invention is to prevent the bolts ornuts from being affected by themovements of the attachment halves whenthe mechanism is in motion; and I accomplish this by forming recesses orsockets in one half of the attachment, and upon the other there arecorresponding projections, lugs or pins adapted to fit into the saidrecesses or sockets. The attachment shown is made of the two halves Band B.

These are preferably made of cast iron, and at each end of each halfthere is a semi-circular flange of such shape and character that whenthe two halves are bolted together there 5 5 shall be produced at eachend of the attachment a circular disk which can act to engage suitablywith the teeth or radial walls or shoulders on the wheels over which thecable passes. flanges as at C, O, of the nature of cars which areperforated to receive the clamping bolts D, D; the aforesaid flanges atthe ends being indicated by a, and a. The attachment is There are alsolaterally projecting formed with an aperture extending longitudinallythrough it for the reception of the wire rope or cable. Heretofore theseapertures have been formed with ribs, corrugations, recesses orindentations, in their walls, for the purpose of obtaining a grip orbite upon the cable. But even when these means are present reliancecannot be placed upon them for obtaining the requisite grip, and theattachments beginto yield along the cable very soon after they are putto work. This I obviate by forming a relatively deep recess E in one ofthe halves of the attachment and forming in the other half a projection,or inward swell as at E. Then when the bolts D D are drawn firmly inplace,the swell or projection E acts to crowd the cable into the recessE and form a bend as shownat A, which although not sharp enough to maror weaken the cable,is nevertheless sufficient to increase the grip ofthe bolts to such an extent that the cable will under ordinary circuInstances break before the attachment will slip. This increased griphowever would be liable to be lost at any time if it were possible forthe bolts or nuts to loosen; which 0 loosening however is effectuallyprevented bythe projections and sockets above referred to. The socketsare indicated at F, and the lugs or projections at F. When the parts arefirmly drawn together the projections fit in with co 'iveyers of thistype. It has long been recognized that for many purposes, particularlywhere carriers or conveyers of great length were needed the wire rope orcable was much preferable to chains, because of the cheapness with whichthe mechanism can be constructed, the weight and strength of the partsin the two cases being equal. But it has also been found that thesecuring of the power imparting, or the material propelling attachment,has been a matter of such difficulty that these conveyers have as yetbeen introduced only to a limited extent.

An attachment substantially similar to that above described can beeasily modified in such way as to provide a scraper or push plateadapted to carry coal, grain, or any other of numerous materials along atrough, or up or down through a tube of any of the well known sorts. Toaccomplish this it ismerely necessary to form a plate at or behind theflange a, at the end of the above described attachment. Preferably theoperative face of the pushing disk is somewhat behind the Wheel-engagingface, so as to be relieved of pressure and strain at the time theattachment is in engagement with the wheel.

There can be more orless modification without departing from theessential features characteristic of the invention.

I am aware of the fact that conveyers or carriers having some of thegeneral features of the invention have been heretofore used orsuggested, as, for instance, shown in Patent No. 331,562, to D.Shortsleeve, dated December 1, 1885; but such constructions illustratethe facts above referred to concerning the liability of one half of theattachment to twist or turn relative to the other, with a loosening ofthe bolts or nuts as the result.

What I claim is 1. In a cable conveyer, the combination with the wirecable, of the attachment formed in halves, each of which partiallysurrounds the cable, the bolts which clamp said halves together, onehalf having a recess for the cable,

the other half having an opposing projection or enlargement E adapted tobend the cable in the said recess, the one half having sockets F, andthe other half having opposing lugs or projections F, substantiallyasset forth.

2. In a cable conveyer, the combination with the wire cable, of theattachments each formed in halves, each of which halves partiallysurrounds the cable, the bolts which clamp said halves together, one ofsaid halves formed with one or more sockets F, and the other of saidhalves formed with opposing lugs or projections F adapted to fit intothe said recesses or sockets whereby the halves of the attachment areprevented from slipping or rocking on each other and loosening of thebolts and nuts is avoided, substantially as described.

23. In a cable conveyer, the combination with the wire cable, of theattachment formed in two sections, and means for securing said sectionstogether one of said sections having a groove, and a recess adapted toreceive the cable, and the other section having a projection whichengages with the cable opposite the recess and forces it therein whenthe said sections are clamped together, substantially as set forth.

t. In a cable conveyer as herein described, the combination with a wirecable, of the attachment formed in two sections, one section havingagroove, and a recess extending below the groove to receive the cable,and the other section having a groove, and a projection opposite to thesaid recess, and bolts parallel to the plane of said recess andprojection, arranged substantially as set forth, whereby when saidsections are drawn together by the bolts, the cable is bent into thesaid recess as described.

In testimony whereof I affix my signaturein presence of two witnesses.

DAVID J. SHELDRICK.

WVitnesses:

CHARLES W. MILLs, J. S. Don.

